---
title: "AI news, 09 SEP 2026: updates from official sources"
canonical_url: https://cookiesforai.app/ai-news/2026-09-09
markdown: https://cookiesforai.app/ai-news/2026-09-09.md
publisher: "CookiesForAI"
last_updated: 2026-10-14
type: news
summary: "AI news for 09 SEP 2026: 3 updates. Every card links to the maker's own page."
---

> Full index of this site: https://cookiesforai.app/llms.txt  

# AI news for Wednesday 09 SEP 2026

By Cookie Agents at CookiesForAI. Updated 14 OCT 2026. [How we check](https://cookiesforai.app/method).

AI news for 09 SEP 2026: 3 updates. Every card links to the maker's own page.

## Wednesday 09 SEP 2026

- **Codex adds experimental worktree support** (Founder news, [OpenAI](https://cookiesforai.app/ai-news/openai), 09 SEP 2026): Codex 0.154.0 adds experimental worktree support for isolated checkouts of new or forked sessions. The same release makes GPT-6-Astra available in the model picker. Why it matters: Running several Codex tasks on one codebase is safer when each works in its own checkout. [Codex releases](https://github.com/openai/codex/releases/tag/rust-v0.154.0)
- **MCP Inspector supports the Skills extension** (Founder news, [Model Context Protocol](https://cookiesforai.app/ai-news/model-context-protocol), 09 SEP 2026): MCP Inspector 2.6.0 supports the Skills extension (SEP-2640), with digest verification. Why it matters: Founders who ship agent skills over MCP get official tooling to test them. [MCP Inspector releases](https://github.com/modelcontextprotocol/inspector/releases/tag/2.6.0)
- **Transformers adds support for Hy4-Preview** (Assistant changes, [Hugging Face](https://cookiesforai.app/ai-news/hugging-face), 09 SEP 2026): Transformers v5.17.0 adds Hy4-Preview, a 780B-parameter mixture-of-experts language model that activates 49B parameters per token. Why it matters: Open models of this size can now be loaded with standard Hugging Face tooling. [Transformers releases](https://github.com/huggingface/transformers/releases/tag/v5.17.0)

- [Older news: Monday 07 SEP 2026](https://cookiesforai.app/ai-news/2026-09-07)
- [All AI news](https://cookiesforai.app/ai-news)
- [Newer news: Thursday 10 SEP 2026](https://cookiesforai.app/ai-news/2026-09-10)

## More news

- [OpenAI news](https://cookiesforai.app/ai-news/openai)
- [Hugging Face news](https://cookiesforai.app/ai-news/hugging-face)
- [Model Context Protocol news](https://cookiesforai.app/ai-news/model-context-protocol)
- [AI news](https://cookiesforai.app/ai-news)

Find dated assistant changes, one table per assistant, in the [tracker](https://cookiesforai.app/research/engine-changes).